GB475808A - Light dividing device - Google Patents

Light dividing device

Info

Publication number
GB475808A
GB475808A GB14723/36A GB1472336A GB475808A GB 475808 A GB475808 A GB 475808A GB 14723/36 A GB14723/36 A GB 14723/36A GB 1472336 A GB1472336 A GB 1472336A GB 475808 A GB475808 A GB 475808A
Authority
GB
United Kingdom
Prior art keywords
prism
images
partly
reflecting
partly reflecting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB14723/36A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Technicolor Motion Picture Corp
Original Assignee
Technicolor Motion Picture Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Technicolor Motion Picture Corp filed Critical Technicolor Motion Picture Corp
Publication of GB475808A publication Critical patent/GB475808A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10Beam splitting or combining systems
    • G02B27/1006Beam splitting or combining systems for splitting or combining different wavelengths
    • G02B27/1013Beam splitting or combining systems for splitting or combining different wavelengths for colour or multispectral image sensors, e.g. splitting an image into monochromatic image components on respective sensors
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10Beam splitting or combining systems
    • G02B27/1006Beam splitting or combining systems for splitting or combining different wavelengths
    • G02B27/102Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10Beam splitting or combining systems
    • G02B27/14Beam splitting or combining systems operating by reflection only
    • G02B27/144Beam splitting or combining systems operating by reflection only using partially transparent surfaces without spectral selectivity
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10Beam splitting or combining systems
    • G02B27/14Beam splitting or combining systems operating by reflection only
    • G02B27/145Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10Beam splitting or combining systems
    • G02B27/14Beam splitting or combining systems operating by reflection only
    • G02B27/145Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces
    • G02B27/146Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces with a tree or branched structure

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

475,808. Optical systems; colour photography. TECHNICOLOR MOTION PICTURE CORPORATION. May 25, 1936, No. 14723. Convention date, Jan. 16. [Class 97 (i)] A light-dividing system for colour photography &c., of the type employing contacting prism elements with partly reflecting as well as totally reflecting surfaces, consists of a prism element receiving the incident light and forming with at least two additional prism elements at least two partly reflecting surfaces inclined to each other, at least one element having a totally reflecting surface inclined to the partly reflecting surfaces for deviating a component beam coming from a partly reflecting surface. The form shown in Fig. 1 consists of three similar right-angled prisms 1, 2, 3 placed in contact with each other, the contact surfaces 16, 17 being rendered partly reflecting. A beam R incident normallv on the surface 5 of the prism 1 is partly reflected at the surface 16, the reflected beam A being totally reflected at the surface 5 to emerge normally from the surface 11. The beam B transmitted by the surface 16 is again divided at the surface 17, the beam C reflected by the latter surface emerging normally from the surface 12 while the transmitted beam D emerges normally from the surface 13. In Fig. 2, the prism 3 is omitted and the prism 2 is divided into two prisms 32, 33 having a partly reflecting contact surface 37. In this form, total reflection occurs at the surfaces 5, 36. As shown in Fig. 1, the images a, c may be recorded on a double-width film W moving in a direction parallel to the apex line of the prism combination, the image d being recorded on an ordinary film F also moving parallel to this line. Alternatively, as in Fig. 2, the images a, c may be formed on successive spaces of an ordinary film 43 moving at right-angles to the apex line, the film 44 also moving at right-angles to this line. Fig. 4 shows a system producing four images and consisting of three similar isosceles prisms 61, 62, 63 placed in contact to form a combination of equilateral triangular section, the contact surfaces 64, 65, 66 being partly reflecting. The paths of the rays forming four images k, m, n, p are clear from the Figure. With this form the four images can be viewed simultaneously in superposition by a lens Q. U.S.A. Specification 1,738,095 is referred to.
GB14723/36A 1936-01-16 1936-05-25 Light dividing device Expired GB475808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US475808XA 1936-01-16 1936-01-16

Publications (1)

Publication Number Publication Date
GB475808A true GB475808A (en) 1937-11-25

Family

ID=21949795

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14723/36A Expired GB475808A (en) 1936-01-16 1936-05-25 Light dividing device

Country Status (1)

Country Link
GB (1) GB475808A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001026384A1 (en) * 1999-10-06 2001-04-12 Optical Coating Laboratory, Inc. Color separating prism assembly and image projection display system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001026384A1 (en) * 1999-10-06 2001-04-12 Optical Coating Laboratory, Inc. Color separating prism assembly and image projection display system

Similar Documents

Publication Publication Date Title
US2106752A (en) Field divider
GB1318042A (en) Optical systems
US2669902A (en) Binocular optical system
US2983183A (en) Beam combining prism
US3687038A (en) Viewfinder system for a single lens reflex camera
US2189932A (en) Light dividing device
US1497356A (en) Method and system for producing a plurality of images of the same object from the same point of view at the same time
US1722356A (en) Optical device for photographic, cinematographic, and other purposes
GB1152019A (en) Optical Systems
GB475808A (en) Light dividing device
US1967215A (en) Photographic lens system
US2189933A (en) Light dividing device
US1957128A (en) View finder system
US1843007A (en) Plural image optical system
US1460706A (en) Production of complemental images
GB398100A (en) Means for the division of a beam of light into two equal and parallel components
US1945029A (en) Optical light dividing system
US2212880A (en) Field divider
US2027675A (en) Motion picture projector
US2128773A (en) Arrangement for taking motion pictures in natural colors
GB1196632A (en) Photographic Viewfinder
US2542228A (en) Trichromatic selective optical light dividing device
SU88541A1 (en) Prismatic color separation system
GB251027A (en) Improvements in and relating to optical systems for three-colour photographic cameras
GB257549A (en) Improvements in optical devices for photographic, kinematographic and other purposes